This interactive scatterplot visualizes the number of flights aggregated by origin airport, with each point representing a single origin and its count on the y-axis. The code uses Vega-Lite API to define the markCircle encoding, while the underlying data is loaded via d3.csv from a GitHub-hosted itinerary dataset. The visualization is rendered in an SVG canvas using vega and vega-lite, with tooltip support provided by vega-tooltip. Axes are customized through a config object that removes domains and adjusts label and title font sizes for readability.